SB2020060216 - Multiple vulnerabilities in Mozilla Firefox 

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Main Vulnerability Database SB2020060216

SB2020060216 - Multiple vulnerabilities in Mozilla Firefox

Published: June 2, 2020 Updated: June 3, 2020

Security Bulletin ID SB2020060216
Severity
High
Patch available
YES
Number of vulnerabilities 8
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 38% Low 13%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 8 secuirty vulnerabilities.


1) Race condition (CVE-ID: CVE-2020-12399)

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to time differences in Mozilla NSS library during the process of generating a DSA signature, the nonce value 'k' is not padded, exposing the bit length. Combined with other techniques, this can result in the recovery of the DSA private key.


2) Use-after-free (CVE-ID: CVE-2020-12405)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when in SharedWorkerService due to a race condition. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


3) Type Confusion (CVE-ID: CVE-2020-12406)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a type confusion error during unboxed JavaScript objects removal. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger a type confusion error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


4) Memory leak (CVE-ID: CVE-2020-12407)

The vulnerability allows a local user to view memory contents

The vulnerability exists due memory leak in WebRender. An attacker with physical access to the system can open a specially crafted web page and view contents of GPU memory on screen.


5) Spoofing attack (CVE-ID: CVE-2020-12408)

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data when browsing a document hosted on an IP address. A remote attacker can trick the victim to visit a specially crafted website and flip flip domain and path information in the address bar.


6) Buffer overflow (CVE-ID: CVE-2020-12410)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


7) Buffer overflow (CVE-ID: CVE-2020-12411)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


8) Spoofing attack (CVE-ID: CVE-2020-12409)

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of certain blank characters in URL in unicode that were rendered as space instead of an encoded URL. A remote attacker can use a specially crafted URL to spoof page content of legitimate website.


Remediation

Install update from vendor's website.

References